package com.siping.netty.client;

import java.net.InetSocketAddress;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

public class EchoClient {

    private final String host;
    private final int port;
    
    public EchoClient(String host, int port) {
        this.host = host;
        this.port = port;
    }
    
    public void start() throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class).remoteAddress(new InetSocketAddress(host, port))
            .handler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel ch) throws Exception {
                    ch.pipeline().addLast(new EchoClientHandler());
                }
            });
            ChannelFuture f = b.connect().sync();
            f.channel().closeFuture().sync();
        } catch (Exception e) {
            e.printStackTrace();
            group.shutdownGracefully().sync();
        } finally {
            group.spliterator();
        }
    }
    
    public static void main(String[] args) throws Exception {
        new EchoClient("localhost", 65535).start();
    }
}
